| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
1.9%
|
| 2 | 4 |
1.3%
|
|
| 3 | 7 |
2.3%
|
|
| 4 | 20 |
6.5%
|
|
| 5 | 51 |
16.5%
|
|
| 6 | 36 |
11.7%
|
|
| 7 | 44 |
14.2%
|
|
| 8 | 49 |
15.9%
|
|
| 9 | 21 |
6.8%
|
|
| 10 | Very effective | 15 |
4.9%
|
| 11 | Don't know | 56 |
18.1%
|
| Sysmiss | 59 |